Use Heron's formula to find the area of the triangle. Round to the nearest square unit.a = 5 inches, b = 12 inches, c = 9 inches
A. 23 square inches
B. 21 square inches
C. 49 square inches
D. 51 square inches
Answer: A
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Solve and check the equation. Begin your work by rewriting the equation without fractions.
- x = 
- 
A. 
B. 
C. 
D. 
Solve.10,500 college students were asked to name their favorite sport. Of this group, 
said basketball, 
said soccer, 
said baseball, 
said they had no favorite sport, and the remainder said volleyball. How many named each sport? 
A. Basketball: 3,500 Soccer: 2,100 Baseball: 1,800 Volleyball: 2,575 None: 525 B. Basketball: 3,500 Soccer: 2,100 Baseball: 1,750 Volleyball: 2,635 None: 515 C. Basketball: 3,500 Soccer: 2,100 Baseball: 1,750 Volleyball: 2,625 None: 525 D. Basketball: 3,500 Soccer: 2,050 Baseball: 1,750 Volleyball: 2,675 None: 525
Add one pair of parentheses to convert the false statement into a true statement. 5 - 112 ÷ 2 ? 3 = 54
A. 5 - (112 ÷ 2) ? 3 = 54 B. (5 - 11)2 ÷ 2 ? 3 = 54 C. (5 - 112 ÷ 2) ? 3 = 54 D. 5 - 112 ÷ (2 ? 3) = 54
Solve the problem.A field microphone used at a soccer game has a parabolic cross section and is 20 inches wide at the opening. The focus is 25 inches from the vertex. Find the depth of the microphone.
A. 0.44 in. B. 4.00 in. C. 16.00 in. D. 1.00 in.